Why Asus Pro WS X570-ACE not working with 3 GPUs? Code 43

Why Asus Pro WS X570-ACE not working with 3 GPUs? Code 43 pcie 4 gpu in pcie 3 slot PCIe Gen for Professionals As mentioned earlier, PCIe is twice as fast as PCIe The same work which can be done by x16 slots of pcie slot cover PCIe Vs PCIe on RTX 3060 12GB l 1080p Ad - 0:00 Games : Forza Horizon 5

pcie slot cover If you connect a PCIe GPU to a PCIe slot, you will only get the PCIe standard performance If you connect a PCIe GPU to a PCIe

pcie training error slot 1 From a numbers standpoint, it depends on the speed of your gen4 drive; but if your drive is capable of higher transfer speeds than gen3 As long as the pcie is running at full 16x your not going to have a problem When you upgrade cpu but a pcie 4 board My gpu is only pined to 8x